9th Symposium on Frequency Standards and Metrology

Session

Null

Not scheduled

Kingscliff, NSW, Australia

128. Atomic Clock for the “GPS-Denied” Environment -- Undersea

Leo Hollberg

Molecular, Atomic, Ion and Nuclear Clocks

Invited Oral

We are testing concepts and evaluating performance of Cs atomic vapor-cell clocks designed specifically for undersea applications (constrained by power consumption, low temperatures (-10 to +10 C), harsh environment) that require reliable atomic timing over durations of greater than one year. Initial results look very promising relative to alternatives.

56. Atomic clocks as exotic field telescopes in multi-messenger astronomy

Dr Andrei Derevianko (University of Nevada, Reno)

Precision Tests on Fundamental Physics

Invited Oral

Our work [Dailey et al., Nature Astronomy 5, 150 (2021)] extends the gravitational and electromag-netic modalities of multi-messenger astronomy to exotic (beyond the Standard Model of elementary particles) fields. We are interested in a direct detection of exotic fields emitted by the powerful astrophysical events such as binary black hole mergers. While the progenitors can be located in...

76. Compact clocks & cavities for space and ground applications

Patrick Gill (National Physical Laboratory)

Miniature, Portable and Space Systems

Invited Oral

Compact robust atomic clocks are being developed as remote timing references with extended holdover to mitigate difficulties arising from loss of disciplining during periods when GNSS satellite constellations are unavailable. This paper describes progress on two NPL low SWaP trapped ion atomic clock systems, namely the ytterbium multi-ion 12.6 GHz microwave clock and the strontium single ion...